<template>
	<view>
		<view class="smart-page-head">
			<view class="smart-page-head-title">text 文本组件</view>
		</view>
		<view class="smart-padding-wrap">
			<view class="text-box" scroll-y="true">
				<text>{{ text }}</text>
			</view>
			<button type="primary" :disabled="!canAdd" @click="add">add line</button>
			<button type="warn" :disabled="!canRemove" @click="remove">remove</button>
		</view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				texts:[
					'HBuilder，400万开发者选择的IDE',
					'HBuilderX，轻巧、极速，极客编辑器',
					'uniapp，终极跨平台方案',
					'HBuilder，400万开发者选择的IDE',
					'HBuilderX，轻巧、极速，极客编辑器',
					'uniapp，终极跨平台方案',
					'HBuilder，400万开发者选择的IDE',
					'HBuilderX，轻巧、极速，极客编辑器',
					'uniapp，终极跨平台方案',
					'......'
				],
				text: '',
				canAdd: true,
				canRemove: false,
				extraLine: []
			};
		},
		methods: {
			add: function(e) {
			   this.extraLine.push(this.texts[this.extraLine.length % 12]);
			   this.text = this.extraLine.join('\n');
			   this.canAdd = this.extraLine.length < 12;
			   this.canRemove = this.extraLine.length > 0;
			},
			remove: function(e) {
			    if (this.extraLine.length > 0) {
			        this.extraLine.pop();
			        this.text = this.extraLine.join('\n');
			        this.canAdd = this.extraLine.length < 12;
			        this.canRemove = this.extraLine.length > 0;
			    }
			}
		}
	};
</script>

<style>

</style>
